Marie Thomas McNaughton of The Press Democrat of Santa Rosa, California, wrote that Ryan is "best known for: images of American Indians, historical paintings, Prairie Sun calendars.
[3] He later moved to California and attended Art Center School in Los Angeles.
[4][5] Paul Liberatore of the Marin Independent Journal wrote that, "Ryan may best be remembered for the produce crate art he began creating in the '70s for fictional marijuana brands like Humboldt Honey, Super Skunk, Stupor Farms, and the ever-popular Muy Blastido.
[7] Ryan contributed to the four-issue Tales of the World Famous Drive Thru Bud.
[8] He also contributed to the one-shot underground comic Tales from the Leather Nun, published in 1973.